DIY Undercurrent, 1kW, CO2, and a chiller in a 4x4 tent

  • Thread starter instantkarma
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instantkarma

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Hi everyone,

Here is my new tent set up. It is a UC knock-off with 5 gallon buckets, 2" PVC, uniseals and a Rubbermaid Brute 20 gallon res. Temps are kept in check by a 1/10 hp JBJ Arctica chiller.

I am following the H&G chart to the tee. It has been awesome so far with the pH rock solid at 5.6 all week.

The environment is controlled by a Sentinel CHHC-1, a 5k BTU window AC, and a small humidifier. Temps are 85f during the day @ 1500ppm and 50% humidity and 75f at night with 50% humidity as well.

The ladies are Alien Dogs from PNC. They just finished their second week of veg and are looking pretty good. One of the clones was tiny and barely hanging onto life when I got it and has been playing catch up ever since. I think I will veg one more week before I flip them.

The smallest one is starting to show what looks like a Ca deficiency on a couple of the lower leaves, gonna pick up some cal-mag tomorrow.

Thanks for looking, if anything looks out of whack let me know as this is my first UC setup.
 
Diy undercurrent 1kw co2 and a chiller in a 4x4 tent
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TrichromeFan

TrichromeFan

1,850
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Lookin good! I love the budget DIY UC system! Roots look nice and healthy.

You planning to swap that humidifier for a dehumidifier in flowering?

I also see no fans for air circulation. That's a must.

Bummer for the one runt.
On your next run, maybe pick up 6 clones, and then pick the strongest four after you veg them for a little while.

Other than those things, you are looking awesome.
Keep posting your progress. I am sure that there are a lot of people who would love to emulate a similar small low budget UC grow.
 
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instantkarma

31
8
Lookin good! I love the budget DIY UC system! Roots look nice and healthy.

You planning to swap that humidifier for a dehumidifier in flowering?

I also see no fans for air circulation. That's a must.

Bummer for the one runt.
On your next run, maybe pick up 6 clones, and then pick the strongest four after you veg them for a little while.

Other than those things, you are looking awesome.
Keep posting your progress. I am sure that there are a lot of people who would love to emulate a similar small low budget UC grow.

Thanks TF,

Yes, I am planning on switching the humidifier out as soon as I need to. I need to pick up a couple of clip on fans, I'll probably try to find some today.

Do you guys think I should veg them for another week or flip them now? Each plant only has 4 sq ft. and 3 out of 4 of them are now as wide as the buckets.
 
420Gator

420Gator

1,281
83
i will be following as well, i wann get into UC and ill probly run something like this to get the hang.
Goodluck
 
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instantkarma

31
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I'm having an issue now with what looks like a Ca deficiency on the smallest clone. I am getting increasing rust spots on the lower leaves. My pH has been steady at 5.8 so that shouldn't be the problem. I am running RO water with no CalMag but the larger plants aren't showing the deficiency. Should I still give them a dose of Cal Mag?
 
TrichromeFan

TrichromeFan

1,850
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I would let them go another week. Especially with the one runt. If you are running RO, then the cal mag can't hurt. Makes perfect sense to me that it would be a ca deficiency. The small plant is just precursor, it has less buffer.
 
I

instantkarma

31
8
Day 19

Here they are at day 19. I did a res change last night and started the 3rd and final week of veg. 1.2 ec and 5.8 pH.
 
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Luke Harrison

Luke Harrison

39
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nice system could you post the building of the bucketes? How you put them togather sealed them an all thnx looks great. You know it;s good if someone wants to copy it.
 
lollipopman

lollipopman

1,211
163
nice system bro, i have a bucket current too with a 1000 hanging vert.. my alien dogs dont yield much but i think ill get around 1.5lb's off this harvest... good luck
 
TrichromeFan

TrichromeFan

1,850
83
lollipopman,
are you running a 4 bucket with one 1k vert in the middle? got any pics?
 
TrichromeFan

TrichromeFan

1,850
83
Thanks lollipopman. Forgive me if I am mistaken, but isn't that 2 lights? Is it 4 ladies?
 
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UNCLEJOE

17
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love the grow ,,i started with two buckets myself amost exactly like wha tya got ,,
 
F

FileError404

Guest
Not sure but it looks like your air pump is in the room. If it is, get it out of there asap. You'd be pumping 1500PPM co2 into your root system.
Great DIY! May your buds be resinous and your harvest gargantuan. :)
 
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Urkle

5
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I'm having an issue now with what looks like a Ca deficiency on the smallest clone. I am getting increasing rust spots on the lower leaves. My pH has been steady at 5.8 so that shouldn't be the problem. I am running RO water with no CalMag but the larger plants aren't showing the deficiency. Should I still give them a dose of Cal Mag?

Yes, you should be running a cal/mag product. With RO there are no base elements. Id adjust the base(before nutes)to 200-300ppm. Then mix from there. I dont use RO but my city water is pretty stripped. So i add 1ml per gallon+/- to get in that window.

I think with cal/mag you will notice a huge overall difference.
 
K

kmk4eva

58
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very nice like how you wraped your buckets what size is your tent
 
TrichromeFan

TrichromeFan

1,850
83
How's it goin, instantkarma? haven't heard or seen any updates in a while.
 
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